Quick view The Jammer R.E.D MSRP: Now: $5.98 Was: The Jammer is a simple and cost effective device designed to keep a door from closing. Features High visibility yellow allows you to mark a room. Fits easily in a shirt pocket, service vest or... RED-TheJammer MSRP: Now: $5.98 Was: Quick view Qty in Cart: 0 Price: MSRP: Now: $5.98 Was: Subtotal: